http://www.linuxquestions.org – I have installed Slackware 13.1(64bit) on my laptop. I did not however install qt4, I installed qt3 and the KDE3.5.10 Desktop environment from Slam64 12.2. I've been trying to compile the qt4.Slackbuild library form Slackbuild (12.2), as it is suppose to be able to coexist with qt3. It seem to error out while compiling. (HowTos)